<template>
	<view>
		<view class="login-container">
			<!-- 提示登录的图标 -->
			<uni-icons type="contact-filled" size="100" color="#afafaf"></uni-icons>
			<!-- 登录按钮 -->
			<button type="primary" class="btn-login" @click="getUserProfile">一键登录</button>
			<!-- 登录提示 -->
			<text class="tips-text">登录后尽享更多权益</text>

		</view>
	</view>
</template>

<script>
	import { mapMutations, mapState } from 'vuex'
	
	export default {
		name: "my-login",
		data() {
			return {
				// 用户登录响应数据
				"message": {
				    "user_id": 12,
				    "is_active": null,
				    "user_sex": "男",
				    "user_qq": "2776078809",
				    "user_tel": "13119851329",
				    "user_xueli": "本科",
				    "token":
				      "Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1aWQiOjEyLCJpYXQiOjE1MjU0MDIyMjMsImV4cCI6MTUyNTQ4ODYyM30.g-4GtEQNPwT_Xs0Pq7Lrco_9DfHQQsBiOKZerkO-O-o"
				  },
			};
		},
		computed: {
			...mapState('m_user', ['redirectInfo']),
		},
		methods: {
			...mapMutations('m_user', ['updateUserInfo', 'updateToken', 'updateRedirectInfo']),
			// 点击一键登录后自动获取用户信息
			getUserProfile(e) {
				uni.getUserProfile({
					desc: 'Wexin',  // 这个参数是必须的
					success: res => {
						// console.log(res)
						this.updateUserInfo(res)
						this.getToken(res)}
				})
			},
			async getToken(info) {
				// 获取用户信息的code值
				const [err, res] = await uni.login().catch(err => err)
				if(err || res.errMsg !== 'login:ok') return uni.$showMsg('登录失败')
				
				const query = {
					code: res.code,
					encryptedData: info.encryptedData,
					iv: info.iv,
					rawData: info.rawData,
					signature: info.signature,
				}
				
				// 换取token
				const { data: loginResult } = await uni.$http.post('/api/public/v1/users/wxlogin', query)
				if (loginResult.meta.status !== 200) 
				uni.$showMsg('登录成功')
				// 引用了假token----待改进
				this.updateToken(this.message.token)
				
				this.navigateBack()
			},
			// 重定向至登录之前的页面
			navigateBack() {
				if (this.rediectInfo && this.rediectInfo.openType === 'switchTab') {
					uni.switchTab({
						url: this.rediectInfo.from,
						complete: () => { 
							this.updateRedirectInfo(null)
						},
					})
				}
			},
		},
	}
</script>

<style lang="scss">
	.login-container {
		height: 750rpx;
		background-color: #f8f8f8;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		position: relative;
		overflow: hidden;

		&::after {
			content: ' ';
			display: block;
			width: 100%;
			height: 40px;
			background-color: white;
			position: absolute;
			bottom: 0;
			left: 0;
			border-radius: 100%;
			transform: translateY(50%);
		}

		.btn-login {
			width: 90%;
			border-radius: 100px;
			margin: 15px 0;
			background-color: #c00000;
		}

		.tips-text {
			font-size: 12px;
			color: gray;
		}
	}
</style>
